Battery current collector plate and battery

Abstract

The present application relates to battery technology and discloses a battery current collector plate and a battery. The battery current collector plate includes a tab connection portion, a terminal connection portion, and a fuse. The tab connection portion represents an annular structure. The terminal connection portion is disposed at the center of the tab connection portion. An annular gap is formed between a circumferential edge of the terminal connection portion and an inner circumferential edge of the tab connection portion. Two ends of the fuse are respectively connected to the circumferential edge of the terminal connection portion and the inner circumferential edge of the tab connection portion.

What is claimed is: 
     
         1 . A battery current collector plate comprising:
 a tab connection portion configured to electrically connect to one or more tabs of a battery, wherein the tab connection portion represents an annular structure;   a terminal connection portion configured to electrically connect to a terminal of the battery, wherein the terminal connection portion is disposed at a center of the tab connection portion, and an annular gap is formed between a circumferential edge of the terminal connection portion and an inner circumferential edge of the tab connection portion;   one or more fuses, each having two ends respectively connected to the circumferential edge of the terminal connection portion and the inner circumferential edge of the tab connection portion.   
     
     
         2 . The battery current collector plate according to  claim 1 , further comprising an insulation part disposed in a space formed by the terminal connection portion, the tab connection portion, and each fuse. 
     
     
         3 . The battery current collector plate according to  claim 2 , wherein an outer circumferential edge of the terminal connection portion is bent toward a side facing away from the one or more tabs to form a first folding edge, and an inner circumferential edge of the tab connection portion is bent toward the side facing away from the one or more tabs to form a second folding edge, with each fuse connected between the first and second folding edges, and the insulation part is disposed in a space formed by the first folding edge, the second folding edge, and each fuse. 
     
     
         4 . The battery current collector plate according to  claim 3 , wherein on a side facing the one or more tabs, a surface of the tab connection portion, a surface of the terminal connection portion, and a surface of the insulation part are coplanar. 
     
     
         5 . The battery current collector plate according to  claim 3 , wherein on the side facing away from the one or more tabs, an end face of the second folding edge, a surface of the insulation part, and a surface of each fuse are flush. 
     
     
         6 . The battery current collector plate according to  claim 3 , wherein the terminal connection portion comprises a terminal connection body, and the first folding edge is connected to an outer circumferential edge of the terminal connection body, the terminal connection body is configured to electrically connect to the terminal; and
 the tab connection portion comprises an annular tab connection body, and the second folding edge is connected to an inner circumferential edge of the tab connection body.   
     
     
         7 . The battery current collector plate according to  claim 6 , wherein an outer diameter a of the tab connection body is in a range of 18 mm to 50 mm, a diameter c of the terminal connection body is in a range of 0 to 0.5a, and a width d of each fuse is in a range of 0 to 0.6c. 
     
     
         8 . The battery current collector plate according to  claim 6 , wherein a thickness of the fuse in the battery current collector plate is denoted by f, and satisfies 0<f≤2 mm; a thickness of the tab connection body is denoted by g and satisfies 0<g≤1 mm, and a thickness of the terminal connection body is denoted by h and satisfies 0<h≤2 mm. 
     
     
         9 . The battery current collector plate according to  claim 8 , wherein the thickness of the fuse, a thickness of the first folding edge and a thickness of the second folding edge are the same. 
     
     
         10 . The battery current collector plate according to  claim 1 , further comprising a plurality of insulation layers overlapped and disposed on a side of the terminal connection portion away from the terminal. 
     
     
         11 . The battery currently collector plate according to  claim 3 , further comprising a plurality of insulation layers overlapped and disposed on a side of the terminal connection portion away from the terminal, and an orthographic projection of the first folding edge onto planes where the insulation layers is located within boundaries of the insulation layers. 
     
     
         12 . The battery current collector plate according to  claim 1 , wherein a plurality of the fuses are evenly disposed around a circumference of the terminal connection portion. 
     
     
         13 . The battery current collector plate according to  claim 2 , wherein the insulation part is made of high-temperature resistant plastic. 
     
     
         14 . The battery current collector plate according to  claim 10 , wherein the high-temperature resistant plastic is polypropylene (PP), polyethylene terephthalate (PET), or polyimide (PI). 
     
     
         15 . A battery comprising a case, a core, one or more terminals, and a battery current collector plate, the battery current collector plate comprising:
 a tab connection portion configured to electrically connect to one or more tabs of a battery, wherein the tab connection portion represents an annular structure;   a terminal connection portion configured to electrically connect to a terminal of the battery, wherein the terminal connection portion is disposed at a center of the tab connection portion, and an annular gap is formed between a circumferential edge of the terminal connection portion and an inner circumferential edge of the tab connection portion;   one or more fuses, each having two ends respectively connected to the circumferential edge of the terminal connection portion and the inner circumferential edge of the tab connection portion;   wherein the battery current collector plate is disposed inside the case, between the core and the terminal, and the tab connection portion of the battery current collector plate is electrically connected to the one or more tabs of the core, and the terminal connection portion of the battery current collector plate is electrically connected to the terminal.   
     
     
         16 . The battery according to  claim 15 , wherein the battery currently collector plate further comprises an insulation part disposed in a space formed by the terminal connection portion, the tab connection portion, and each fuse. 
     
     
         17 . The battery according to  claim 16 , wherein an outer circumferential edge of the terminal connection portion is bent toward a side facing away from the one or more tabs to form a first folding edge, and an inner circumferential edge of the tab connection portion is bent toward the side facing away from the one or more tabs to form a second folding edge, with each fuse connected between the first and second folding edges, and the insulation part is disposed in a space formed by the first folding edge, the second folding edge, and each fuse. 
     
     
         18 . The battery according to  claim 17 , wherein the battery currently collector plate comprises at least one of:
 on a side facing the one or more tabs, a surface of the tab connection portion, a surface of the terminal connection portion, and a surface of the insulation part are coplanar; or   on the side facing away from the one or more tabs, an end face of the second folding edge, a surface of the insulation part, and a surface of each fuse are flush.   
     
     
         19 . The battery according to  claim 17 , wherein the terminal connection portion comprises a terminal connection body, and the first folding edge is connected to an outer circumferential edge of the terminal connection body, the terminal connection body is configured to electrically connect to the terminal; and
 the tab connection portion comprises an annular tab connection body, and the second folding edge is connected to an inner circumferential edge of the tab connection body.   
     
     
         20 . The battery according to  claim 19 , wherein an outer diameter a of the tab connection body is in a range of 18 mm to 50 mm, a diameter c of the terminal connection body is in a range of 0 to 0.5a, and a width d of each fuse is in a range of 0 to 0.6c.